It's called organ of the human body to all tissues performing any specific function. An organ is composed of different kinds of tissues such as muscles or may be membranes.

The bodies generally operate within systems or devices, ie compenetrados with other bodies for conducting unafunción. For example, in the digestive system we liver, stomach or intestine, each of which is a function.

Regarded as bodies eyes, skin and heart, but not all are of equal importance. It is vital organs uses the term to refer to those without which we can not live as the lungs or pancreas.

Lungs

They are the main organs of the respiratory system. They loaded the blood of carbon dioxide is cleaned and loaded oxygen. The passage of oxygen to the blood occurs through the alveoli are the ramifications of the bronchial tubes inside the lungs.

The introduction of oxygen in the lungs and the expulsion of carbon dioxide is produced through the respiratory movements of inspiration and expiration.

The lungs are not muscles such as the heart, why not breathing movements are performed them, but a so-called diaphragm muscle below the lungs.

Kidneys

They are two organs of the body located in the lower back or posterior area of the abdomen. Its main function is to filter the blood and assist in the disposal of waste in it.

In the kidneys there are filters that are called nefronas. When the blood has been leaked, continued its movement. Meanwhile, the waste will be filtered by the kidneys subsequently expelled through urine.

The ureters are responsible for driving the liquid waste from the kidney to the bladder. When it is filled with fluid, urine is expelled through the urethra.

Liver

It is a major vital organs of the human body. It is located on the right side of abdomen. Among its features highlights the transformation substances are harmful to the body in other harmless.

The liver also performs other duties as the manufacture of bile, which is essential to the realization of digestion. It is also responsible for transforming part of the food in carbohydrates and is capable of manufacturing proteins.

Pancreas

It is an organ of the digestive system located on the right side of abdomen. It is a gland that secretes substances called enzymes necessary for the realization of the digestive function.

Another of the main functions of the pancreas gland as is the production of hormones such as insulin. This example serves to maintain proper levels of blood sugar.

The diabetes can for example be a shortfall in the production of insulin, which is responsible pancreas.

Spleen

Part of the lymphatic system. It is located in the left upper abdomen. It is not a vital organ because it is possible to live without it, but the body would become more vulnerable to infections.

Its functions are to filter blood and eliminate it defective red blood cells. It is also responsible for producing antibodies to help fight infections.